#include <iostream>
#include <deque>
#include <iomanip>
using namespace std;

template<typename T>
void print(const T& vec)
{
    cout<<"size:"<<vec.size()<<endl;
    for(auto ite = vec.begin(); ite != vec.end(); ite++)
    {
        cout<<*ite<<" ";
    }
    cout<<endl;
}

int main()
{
    int a = 12;
}